Sound absorbing material quick in onsite construction and method for preparing sound absorbing material

A sound-absorbing material and fast technology, applied in the direction of sound insulation, building components, floors, etc., can solve the problems of affecting the sound-absorbing effect, large transportation volume, and troublesome construction, and achieve the effect of good sound-absorbing effect, reducing inconvenience and saving time.

Inactive Publication Date: 2012-07-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the foaming process commonly used in these technologies, the pores are mostly closed-cell structures, which affects the sound-absorbing effect
In order to form the open-hole structure, other products developed are mostly open-hole plates and blocks with a diameter of about 1 cm, such as "High-efficiency sound-absorbing and noise-reducing blocks for railways and highways" (CN201068552), which has a large transportation volume and troublesome construction

Method used

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  • Sound absorbing material quick in onsite construction and method for preparing sound absorbing material
  • Sound absorbing material quick in onsite construction and method for preparing sound absorbing material
  • Sound absorbing material quick in onsite construction and method for preparing sound absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the technical scheme of the present invention, a sound-absorbing material for rapid on-site construction has been prepared. Its components are 50 parts of ordinary Portland cement, 20 parts of lime, 2 parts of construction gypsum, and dry aluminum powder with fat 0.01 part, 12 parts of animal protein foaming agent THW-1, 1 part of epoxy resin powder, 0.1 part of carboxypropyl methyl cellulose ether, 0.1 part of silicone waterproof powder BS1042 (Wacker Company), mix well, and get on-site Acoustic material for fast construction.

[0029] The method of use is: mix the sound-absorbing material with water at a ratio of 1:0.3, stir rapidly at a speed of 1000 rpm for 5 minutes, and then cast and spray. The sound absorption coefficient is 0.06~0.50, as shown in Table 2, compared with the sound absorption coefficient of the foam cement in the porous material in Table 1 in each frequency band, the sound absorption coefficient of the sound-absorbing material prepared...

Embodiment 2

[0033] According to the technical scheme of the present invention, a sound-absorbing material for rapid on-site construction has been prepared. Its components are 80 parts of ordinary Portland cement, 9.75 parts of lime, 5 parts of construction gypsum, and dry aluminum powder with fat 0.05 parts, 8 parts of plant protein foaming agent aGk, 1 part of epoxy resin powder, 0.1 part of carboxymethyl cellulose ether, 1 part of silicone waterproof powder (sold by MAXCELL SILICOAT), mix well, and get sound-absorbing materials for rapid construction on site Material.

[0034] The method of use is: mix the sound-absorbing material with water at a ratio of 1:0.3, stir rapidly at a speed of 800 rpm for 2 minutes, and then cast and spray. The sound absorption coefficient is 0.18~0.30.

Embodiment 3

[0036] According to the technical scheme of the present invention, a sound-absorbing material for rapid on-site construction has been prepared. Its components are 60 parts of ordinary Portland cement, 20 parts of lime, 2 parts of building gypsum, and dry aluminum powder with fat 0.05 part, 8 parts of sodium lauryl sulfate, 1 part of epoxy resin powder, 0.1 part of carboxymethyl cellulose ether, 0.1 part of organic silicon waterproof powder BS1042 (Wacker company), mix well, and obtain the rapid construction site sound-absorbing material.

[0037] The method of use is: mix the sound-absorbing material with water at a ratio of 1:0.5, stir rapidly at a speed of 900 rpm for 10 minutes, and then cast and spray. The sound absorption coefficient is 0.24~0.50.

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PUM

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Abstract

The invention discloses a sound absorbing material quick in onsite construction, which is characterized by being made of, by weight, 50-80 parts of cement, 5-20 parts of lime, 2-5 parts of gypsum, 0.01-1 part of aluminum powder, 2-8 parts of foaming agent, 1-3 parts of epoxy rubber power, 0.1-1.0 part of cellulose ether and 0.1-1 part of water repellent, which are uniformly mixed to obtain the sound absorbing material quick in onsite construction. The usage includes: mixing the sound absorbing material with water according to the mass ratio of 1:0.3-0.5, quickly mixing at a speed of 800r / min for less than 15min, and pouring and painting. Duplex twice foaming of physical foaming and chemical foaming are adopted pore structure can be obtained, and sound absorbing is effective. Further, since the material is powder, utilization process is simplified, and the material is waterproof, fireproof and widely applicable to industrial and civil architectures.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a sound-absorbing material for rapid on-site construction and a preparation method thereof. Background technique [0002] The environmental noise produced in industrial production, transportation, building construction and social life is becoming more and more serious, and has become a major public hazard that pollutes the human social environment. Noise has the characteristics of locality, temporary and multiple. Noise affects people's work, study, conversation, thinking, rest and sleep, not only affects people's physical and mental health, but even reduces people's life expectancy. [0003] Sound originates from the vibration of an object, which causes the vibration of the adjacent air to form sound waves, and propagates around in the air medium. When the sound is transmitted to the surface of the component material, part of the sound energy is reflected, part of...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/14E04B1/82
Inventor 蹇守卫马保国苏雷孔维赵志广刘敏石明明蔡礼雄
Owner WUHAN UNIV OF TECH
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